For this item, select the answers from the drop-down menus. Select the phrases that best complete the sentence.
A crane lifts construction materials from a palette to the top of a building at a
constant rate. The equation y = 4x + 3 models the height of the materials, y, in
feet, after seconds of lifting.
The crane lifts the materials at a rate of
and the initial height of the materials is

x=9

step-by-step explanation:

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.